'Son's' in the Bible

Then the men of Israel said unto Gideon, Rule thou over us, both thou, and thy son, and thy son's son also: for thou hast delivered us from the hand of Midian.

He returned the 1,100 pieces of silver to his mother, and his mother said, “I personally consecrate the silver to the Lord for my son’s benefit to make a carved image overlaid with silver.”